Decolorization of the benzidine-based azo dye Congo red by the new strain Shewanella xiamenensis G5-03

Abstract Shewanella xiamenensis G5-03 was observed to decolorize the azo dye Congo red in synthetic wastewater. The influence of some factors on decolorization efficiency evaluated. optimal conditions were temperature 30-35 °C, pH 10.0, incubation time 10 h, and static condition. kinetic fitted Michaelis–Menten model (Vmax = 111.11 mg L-1 h-1 Km 448.3 L-1). bacterium also able degrade benzidine, a product bond breakage red, which contributed reduce phytotoxicity. ability S. for simultaneous degradation shows its potential application biological treatment wastewaters containing dyes.